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Reconciling cosmic dipolar tensions with a gigaparsec void postprint

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Abstract: Recent observations indicate a $4.9\sigma$ tension between the CMB and quasar dipoles. This tension challenges the cosmological principle. We propose that if we live in a gigaparsec scale void, the CMB and quasar dipolar tension can be reconciled. This is because we are unlikely to live at the center of the void. And a 15% offset from the center will impact the quasars and CMB differently in their dipolar anisotropies. As we consider a large and thick void, our setup can also ease the Hubble tension.

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[V1] 2023-02-19 20:58:59 ChinaXiv:202303.08023V1 Download

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